| 年份 | 坦桑尼亚 |
|---|---|
| 2023 | - |
| 2022 | 3.10343 |
| 2021 | 3.11769 |
| 2020 | 3.12768 |
| 2019 | 3.12051 |
| 2018 | 3.10113 |
| 2017 | 3.08719 |
| 2016 | 3.07811 |
| 2015 | 3.07038 |
| 2014 | 3.05764 |
| 2013 | 3.0321 |
| 2012 | 2.99205 |
| 2011 | 2.94416 |
| 2010 | 2.89841 |
| 2009 | 2.85104 |
| 2008 | 2.81103 |
| 2007 | 2.78782 |
| 2006 | 2.77422 |
| 2005 | 2.76682 |
| 2004 | 2.76383 |
| 2003 | 2.76318 |
| 2002 | 2.7652 |
| 2001 | 2.77097 |
| 2000 | 2.78465 |
| 1999 | 2.80327 |
| 1998 | 2.81506 |
| 1997 | 2.82646 |
| 1996 | 2.82108 |
| 1995 | 2.81834 |
| 1994 | 2.86431 |
| 1993 | 2.92368 |
| 1992 | 2.94372 |
| 1991 | 2.93512 |
| 1990 | 2.92767 |
| 1989 | 2.9222 |
| 1988 | 2.91867 |
| 1987 | 2.9266 |
| 1986 | 2.93837 |
| 1985 | 2.94473 |
| 1984 | 2.94197 |
| 1983 | 2.93237 |
| 1982 | 2.91714 |
| 1981 | 2.88844 |
| 1980 | 2.85558 |
| 1979 | 2.82158 |
| 1978 | 2.78661 |
| 1977 | 2.7494 |
| 1976 | 2.71154 |
| 1975 | 2.67431 |
| 1974 | 2.63748 |
| 1973 | 2.60042 |
| 1972 | 2.56617 |
| 1971 | 2.53657 |
| 1970 | 2.51048 |
| 1969 | 2.48873 |
| 1968 | 2.47237 |
| 1967 | 2.46028 |
| 1966 | 2.44943 |
| 1965 | 2.43833 |
| 1964 | 2.42718 |
| 1963 | 2.41602 |
| 1962 | 2.4042 |
| 1961 | 2.39207 |
| 1960 | 2.37957 |